Disposable dental prophylaxis angle
US6257886A · kind A · utility
Inventor
Key dates
| Filing date | Jun 23, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Jun 23, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/005
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A disposable dental prophylaxis angle including an elongated housing which defines a longitudinal axis and has a central bore and a head portion in fluid communication with the central bore. A prophylaxis cup is rotatably supported by the head portion and in fluid communication with the central bore through the head portion. An actuator is movably supported by the housing and includes a piston cooperatively received and supported in the central bore. Together, the piston and the central bore define a fluid chamber of decreasable volume located therebetween. A flowable dentifrice material may be contained within this chamber. The actuator is manually movable in the direction of the longitudinal axis of the housing to move the piston within the central bore in an indexing fashion in successive increments of a predetermined distance therealong, to reduce the volume of the chamber and to force the flowable dentifrice material in predetermined, incremental amounts which correspond to the distance traveled by the piston, from the chamber to the prophy cup via the head portion. In addition, the present invention discloses an actuator including a cam and a push rod having a cam follower, a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.